Ten sheep were living a peaceful life in a little house in the big woods. But one day a horde of evil wolves came. They decided to eat the sheep. We mustn't allow that, thus build defense towers and destroy all gray predators you will see.

The microbes continue attacking! Now you'll have to face purple microbes, which are twice cleverer than other alien microbes and they are very decisive to invade the Green World. Enjoy new levels of this exciting game and try to prevent alien microbes' invasion!